P.D.S. is a form of chronic indigestion with an unpleasant feeling of fullness after eating. Symptoms are a feeling of pain and burning in the throat and stomach. In a study of 228 people who suffered from this malady, they received acupuncture for 20 minutes, three times a week for four weeks. They were all required to complete questionnaires about the amount of fullness, bloating and pain before treatments began. The results were published in the Annals of Internal Medicine. Of the participants, 83% showed some benefits and of those 28% showed complete elimination of distress. The results could be of great benefit to those who suffer from P.D.S. since the drugs used in treatment can have an intolerable effect.